Other CF-based methods focus on utilizing features extracted from the convolutional neural network (CNN) to obtain a more comprehensive object representation. Some trackers hierarchically utilize convolutional features or propose an adaptive fusion approach to improve the encoding ability of the model [1]}, [2]}, [3]}, [4]}.
Although CF-based trackers have made sound progress, it is still difficult for them to achieve object tracking for UAV with high performance and efficient operation at the same time.
